JPH0454897Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention is a paper feeding device for a packaging machine in which box-shaped contents are raised and lowered by an elevator and rolled up against horizontally supported wrapping paper; Specifically, a wrapping paper feed path in which a plurality of support rollers and transfer belts are installed horizontally is provided perpendicular to the elevator hoistway.
As the transfer belt operates, the wrapping paper on the support roller is fed toward the elevator hoistway, and the leading edge of the wrapping paper in the traveling direction hits a downstream stopper that can be adjusted and moved in the paper feeding direction to a fixed position in the hoistway. This relates to an item in which the box-shaped contents are brought into contact with the wrapping paper and wrapped around the body as the elevator goes up and down.

<Prior Art> Conventionally, as a paper feeding device for this type of packaging machine, as disclosed in Japanese Utility Model Publication No. 59-7203, for example, a paper feeding device has been used, as disclosed in Japanese Utility Model Publication No. 59-7203. An adjustment rack is installed along the paper feed direction so that it can freely move back and forth.
A movable support roller is arranged coaxially with the fixed support roller on the hoistway side and is attached to the tip of the adjustment rack on the hoistway side, and an upstream stopper is formed, and the wrapping paper fed by passing over the upstream stopper is By being held between the upstream stopper and the downstream stopper, the wrapping paper is aligned with the vertical plane passing through the center of the wrapping paper and the center of the contents conveyed to the elevator hoistway, and is Make the length to both end surfaces of the contents equal,
When the size of the wrapping paper is changed, some stoppers are moved closer to each other or separated by the same length by manually operating an operating handle.

<Problems to be solved by the invention> However, in the paper feed device of such conventional packaging machines, multiple fixed support rollers and movable support rollers are coaxially arranged, so it is more difficult than before. If the fixed support roller is moved away from the hoistway and the adjustment movement range of the upstream stopper is expanded so that even large wrapping paper can be used, the adjustment movement distance of the movable roller will also become shorter.

In this state, if the movable support roller is moved furthest to the hoistway side to feed the smallest amount of wrapping paper, the distance from this movable support roller to the nearest fixed support roller on the hoistway side is It becomes longer than the paper direction dimension.

As a result, the wrapping paper being fed falls between these two rollers, making it impossible to feed the paper.As a result, it is not possible to expand the size range of wrapping paper that can be used, and the wrapping paper is transferred from the movable support roller to the fixed support roller closest to the hoistway. There is a problem in that the distance between the rollers is extremely long compared to the pitches of the other fixed support rollers, and the feeding of the wrapping paper is unstable.

In view of such conventional circumstances, the present invention reduces the distance from the movable support roller to the nearest fixed support roller while making it smaller than the minimum wrapping paper size in the paper feeding direction.
The purpose is to expand the adjustment movement range of the upstream stopper.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is to allow a movable rod to freely reciprocate in the paper feeding direction parallel to a line on which a plurality of support rollers are fixedly arranged. A plurality of movable support rollers are mounted horizontally on this movable rod at appropriate intervals in the paper feeding direction, and the pivoting positions of these movable support rollers are adjusted from the pivoting position of the fixed support roller in the paper feeding direction. At the same time, the movable rod is moved in the same length adjustment direction in the opposite direction to the adjusting movement direction of the downstream stopper in conjunction with the downstream stopper, and an upstream stopper is formed at the tip on the hoistway side. The present invention is characterized in that the distance in the paper feeding direction between the fixed support roller and the movable support roller when the wrapping paper is fed is set smaller than the minimum dimension of the wrapping paper in the paper feeding direction.

<Operation> According to the above-mentioned technical means, the present invention separates the downstream stopper and the moving rod by the same length as the size of the wrapping paper increases, so that the plurality of moving support rollers can be moved away from the hoistway. The movable support roller at the tip of the paper feed direction moves closest to the fixed support roller on the hoistway side when the wrapping paper is at its maximum, and vice versa. By moving the downstream stopper and the movable rod closer to each other by the same length as the size of However, when the wrapping paper is the smallest, the movable support roller at the end in the paper feeding direction can be separated from the fixed support roller closest to the hoistway in the paper feeding direction by less than the size of the smallest wrapping paper in the paper feeding direction.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

In this embodiment, as shown in FIG. 1, a pair of fixing rods 1 are installed horizontally in the left and right direction orthogonal to the paper feeding direction on the upstream side of the paper feeding path a of the wrapping paper A, and these rods are fixed. A pair of horizontally movable rods 2, 2 are horizontally installed in parallel to each other in the left-right direction inside the rods 1, 1 in the left-right direction,
A pair of rack plates 3, 3 are horizontally installed in the left and right direction on the downstream side of the supply path a, located on the outside of the fixed rods 1, 1 in the left and right direction, respectively, and installed horizontally in parallel with each other. A hoistway _b1 is arranged, and as the elevator b ascends, the top surface of the box-shaped contents B abuts against the center of the supplied wrapping paper A and is wrapped around it.

The fixing rod 1 is a band plate extending in the paper feeding direction, and its lower surface is immovably fixed to the support frame _a1 to hold it horizontally. In some cases, three of them are rotatably mounted at appropriate intervals in the paper feeding direction.

The movable rod 2 is a band plate extending in the paper feeding direction similar to the fixed rod 1, and is supported by the support frame _a1 so as to be able to reciprocate only in the paper feeding direction, and has an upstream adjustment rack 2a on its lower surface in the paper feeding direction. At the same time, a plurality of movable support rollers 2b, three in the case of the illustrated example, are rotatably attached to the outer surface at appropriate intervals in the paper feeding direction.

These fixed support rollers 1a... and movable support rollers 2b... are disposed on the same water surface with their respective upper ends protruding higher than the upper surfaces of the fixed rod 1 and movable rod 2, and are pivoted to the fixed support rollers 1a... The line on which the movable support roller 2b... is pivoted is shifted in the left-right direction, and even if the movable rod 2 is moved in the paper feeding direction, the movable support roller 2b... is fixed on the fixed support roller 1a... and the distance in the paper feeding direction between the fixed support roller 1a closest to the hoistway _b1 side and the movable support roller 1a closest to this when feeding the smallest wrapping paper A.
It is set smaller than the size of the minimum wrapping paper A in the paper feeding direction.

In addition, an upstream stopper 2c is formed at the end of the elevator b of the moving rod 2 on the hoistway _b1 side, and this upstream stopper 2c can be climbed over when the wrapping paper A is fed from the upstream side of the supply path a. Moreover, it is formed in a shape that drops slightly downward after passing through.

The rack plate 3 is a band plate extending in the paper feeding direction, and is supported by the paper feeding path main body _a1 so as to be movable laterally in the paper feeding direction, and has a downstream adjustment rack 3a engraved in the paper feeding direction on its upper surface. At the end of hoistway b ₁ side of elevator b, there is a downstream stopper 3b where the leading end of the fed wrapping paper A in the traveling direction hits and drops slightly downward.
form.

The distance between the upstream stopper 2c and the downstream stopper 3b is equal to the dimension of the wrapping paper A in the paper feeding direction, and the center thereof is 2 minutes apart from the dimension of the content B placed on the elevator b in the paper feeding direction. It is aligned with the vertical plane.

Furthermore, pinions 4a and 5a are meshed with the upstream adjustment rack 2a and the downstream adjustment rack 3a, respectively, and pinion shafts 4 and 5 into which the centers of these pinions 4a and 5a are fitted in a non-rotatable manner are attached to the support frame. _a1, respectively, so as to be rotatable in the left and right directions, and one end of both pinion shafts 4, 5 and a rotary shaft 6 extending in the paper feeding direction are meshed with each other via screw gears,
An operating handle 6a is provided at one end of the rotating shaft 6 as a manual adjustment section.

Therefore, if the operating handle 6a is manually rotated, both pinions 4,
5 rotate, and the movable rod 2 on which the upstream adjustment rack 2a is engraved and the rack plate 3 on which the downstream adjustment rack 3a is engraved move in the paper feeding direction, and the upstream stopper 2c and the downstream stopper 3b are moved. Move them closer to each other or move them apart by the same length.

Next, the operation of the paper feeding device of such a packaging machine will be explained.

First, when the paper feeding direction is expanded due to a change in the size of the wrapping paper A, if the upstream stopper 2c and downstream stopper 3b are separated by the same length from each other by operating the operating handle 6a, a plurality of wrapping paper A can be separated by the same length. The movable support rollers 2b... are separated from the hoistway _b1 and overlap with the plurality of fixed support rollers 1a... in the paper feeding direction, and when the size of the wrapping paper A in the paper feeding direction is maximum, the leading edge in the paper feeding direction The movable support roller 2b moves closest to the support roller 1a on the hoistway _b1 side.

Conversely, when the paper feeding direction of the wrapping paper A is reduced, the upstream stopper 2c and the downstream stopper 3b are set to the same length by operating the operating handle 6a as shown in FIGS. 1 and 2. When the movable support rollers 2b... approach the hoistway _b1 side, the fixed support rollers 1
When the size of wrapping paper A in the paper feeding direction is the smallest, the movable support roller 2b at the end in the paper feeding direction moves from the fixed support roller 1a on the hoistway b ₁ side closest to the paper feeding direction. However, in the case of this embodiment, this separation dimension is approximately the same as the arrangement pitch of the fixed support roller 1a... and the movable support roller 2b..., and is smaller than the minimum wrapping paper A dimension in the paper feeding direction. short.

On the other hand, above the supply path a, a transfer belt 7 is provided.
will be placed.

The transfer belt 7 includes a drive pulley 7a horizontally installed above the upstream side of the supply path a, and a driven pulley 7b horizontally installed horizontally above the downstream side of the supply path a.
The wrapping paper A is wound one by one between the lower surface thereof and the fixed support roller 1a and the movable support roller 2b, and the wrapping paper A is inserted into the hoistway from the upstream side.
Transport to b ₁ .

Further, the intermediate position of the moving belt 7 in the sheet feeding direction has a limit in vertical height due to the relationship with other mechanisms of the packaging machine, but the one shown in the figure is the drive pulley 7a.
By arranging the tension pulleys 7c and 7c close to the driven pulley 7b and the driven pulley 7b, the upper side of the transfer belt 7 is pushed down and the vertical height dimension is shortened.

Therefore, the conventional transfer belt that makes a U-turn using a U-turn pulley near the center of the supply path a,
Since the diameter of the U-turn pulley cannot be made large, there was a problem that the life of the transfer belt was shortened, but the one shown in the figure can solve the above problem because the diameter of the driven pulley 7b can be made large.

Furthermore, the fixed rod 1 and the movable rod 2 on either side in the left or right direction are attached so as to be adjustable in the left and right directions when the left and right width dimension changes as the size of the contents B changes.

In the above-mentioned embodiment, the fixed support rollers 1a... were pivotally attached to the inner surface of the fixed rod 1, and the movable support rollers 2b... were attached to the outer surface of the movable rod 2, but the present invention is not limited to this. These fixed support rollers 1a and movable support rollers 2b may be placed at any position as long as the lines on which they are arranged are shifted in the left-right direction and the rollers do not come into contact even if the movable rod 2 is moved in the paper feeding direction, for example, the fixed support rollers It is also optional to pivotally support the rollers 1a... on the outer surface of the fixed rod 1, or to pivotally support the movable support rollers 2b... on the inner surface of the movable rod 2.

<Effects of the Invention> Since the present invention has the above configuration, it has the following advantages.

As the size of wrapping paper increases, by separating the downstream stopper and the movable rod by the same length, the multiple movable support rollers move away from the hoistway and move toward the paper feed direction with the multiple fixed support rollers. When the wrapping paper is at its maximum size, the movable support roller at the tip of the paper feed direction moves closest to the fixed support roller on the hoistway side, and conversely, as the size of the wrapping paper decreases, the downstream stopper and the movable rod move toward each other. By approaching the paper by the same length, the plurality of movable support rollers approach the hoistway side and are continuous with the plurality of fixed support rollers in the paper feeding direction, and when the wrapping paper is at its minimum, the movement of the end in the paper feeding direction Since the support roller can be isolated from the fixed support roller closest to the hoistway in the paper feeding direction to a distance that is less than the minimum wrapping paper feeding direction dimension, the distance from the movable support roller to the nearest fixed support roller can be set to the minimum wrapping paper feeding direction. The adjustment movement range of the upstream stopper can be expanded while being smaller than the directional dimension.

Therefore, compared to conventional systems in which multiple fixed support rollers and movable support rollers are arranged coaxially, the wrapping paper being fed does not fall between the rollers and become unable to feed, and the movable support roller The range of adjustment movement of the upstream stopper is expanded by the number of movable support rollers, which expands the size range of wrapping paper that can be used.The more movable support rollers are arranged, the shorter the pitch of the movable support rollers. , the feeding of wrapping paper is stabilized.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a paper feeding device of a packaging machine showing an embodiment of the present invention, when the size of the wrapping paper in the paper feeding direction is small, Fig. 2 is a vertical side view of the same, and Fig. 3 is the same part. FIG. 4 is an enlarged longitudinal sectional front view and a side view showing the manual adjustment section. A...wrapping paper, B...contents, a...supply route,
b... Elevator, b ₁ ... Hoistway, 1a... Fixed support roller, 2... Moving rod, 2b... Moving support roller, 2c... Upstream stopper, 3b...
...Downstream stopper, 7...Transfer belt.

Claims (1)

[Scope of utility model registration request] A wrapping paper supply path in which a plurality of support rollers and a transfer belt are installed horizontally is provided perpendicular to the elevator hoistway, and as the transfer belt operates, the wrapping paper on the support rollers is directed toward the elevator hoistway. The leading edge of the wrapping paper in the traveling direction hits the downstream stopper, which can be adjusted and moved in the paper feeding direction, and is stopped at a fixed position in the hoistway.The box-shaped contents are removed from the wrapping paper as the elevator goes up and down. In a paper feeding device of a packaging machine that rolls up the paper by abutting against it, a movable rod is horizontally installed so as to be reciprocally movable in the paper feeding direction parallel to the line on which the plurality of support rollers are respectively fixedly arranged, and the movable rod has a plurality of movable support rollers are pivoted at appropriate intervals in the paper feeding direction, and the pivoting positions of these movable support rollers are shifted from the pivoting position of the fixed support roller in the left and right direction perpendicular to the paper feeding direction,
The movable rod is linked with the downstream stopper to adjust the same length in the direction opposite to the adjusting movement direction of the downstream stopper, and an upstream stopper is formed at the tip on the hoistway side, and a fixed support roller is used when feeding the smallest wrapping paper. and the moving support roller in the paper feeding direction,
A paper feeding device for a packaging machine, characterized in that the size is set smaller than the minimum size of the wrapping paper in the paper feeding direction.